Plant-guard attachment for cultivators.



No. 7036,160. Patented Aug. 5, I902;

M. CHRISTIANSON. PLANT GUARD ATTACHMENT FOR CULTIVATORS.

(No Model.)

irno STATES PATENT OFFICE.

MARTIN CHRISTIANSON, OF BODE, IOVA.

PLANT-GUARD ATTACHMENT FOR CULTIVATORS.

SPECIFICATION forming part of Letters Patent No. 706,160, dated August5, 1902.

Application filed March 8, 1902 T0 rtZZ whom, it may concern.-

Be it known that I, MARTIN CHRISTIANSON, a citizen of the United States,residing at Bode, in the county of Humboldt and State of Iowa,haveinvented a new and useful Plant Guard Attachment for Cultivators, ofwhich the following is a specification.

My object is to protect plants from being injured by clods, rubbish, orloose ground being thrown upon them as the shovel of a cultivator isadvanced in the ground alongside of a row of plants, to make the groundfine, and to distribute loose pulverized soil to the plants, to aid inkeeping the shovel clean, and to allow the cultivator to be advanced ata greater rate of speed than usual.

My invention consists in the construction, arrangement, and combinationof a rotatable plant-guard and ground pulverizer and distributer andmeans for regulating its penetration into the ground in combination withthe beam and shovel of a cultivator, as hereinafter set forth, pointedout in my claims, and illustrated in the accompanying drawings, in whichFigure 1 is a full View of the side of the guardthat is to be nearestthe shovel when in operation. Fig. 2 shows the reverse side that is tobe nearest the plant and shows how acircular shield is detachablyconnected with the rotatable guard. Figs. 3 and 4 show how the rotatableplant-guard is detachably and adjustably connected with a circular beam.

designates a tubular hub that has an integral flange 11, to which isfixed a disk 12 by means of rivets 13. A second disk 14 is rigidly fixedto the disk 12 by means of rivets 15 and 16, and a plurality of straightmetal spokes 17, made of heavy wire or light round rods provided witheyes at their inner ends, are clamped fast between the disks 12 and 14and the two series of rivets 15 and 16, as shown in Figs; 1 and 2.Dotted lines in Fig. 1 indicate how the rivets are extended through theeyes on the inner end of the spokes that are thus rigidly fixed to thehub to extend radially and rotate in a vertical plane when in operation.

To stiffen the spokes and to retain them in alinement, a wire is wovento them to produce a rigid rim or circular band 18 at some dis tancefrom the ends of the spokes, so each Serial No, 97,327. (No model.)

spoke can penetrate the ground when the cultivator is advanced alongsideof a row of plants, as required to rotate the plant-guard and loosen andpulverize the soil.

To limit the amount of loose ground thatis allowed to pass throughbetween the spokes of the plant-guard, a circular sheet-metaldisk 19 isdetachably fastened to the guard by means of metal clips 20, riveted tothe wire band 18, and a turn-button 21, pivoted to the same band, asshown in Fig. 2. A 'notch 22 in the circumference of the disk and a stud23 on the turn-button facilitate the fastening and unfastening of thedisk 19.

24 is a metal upright adapted to be clamped fast to a cultivator-beam 25by means of a yoke 26, as shown in Figs. 3 and 4. The lower end of theupright is doubled upward, and between the parallel parts of the uprightthus produced the rear elbow-shaped end of a guard-bearer 27 is pivotedin such a mannor that it will have free'upward motion, but no downwardmotion. This bearer is made of a flat metal bar and curved laterally atits free front end, as shown in Fig. 3, in such a manner that therotatable guard connected therewith will be retained in an inclinedposition relative to the beam and the line of advance.

A bolt 28 is extended through the hub 10 and fastened to the front endof the bearer 27 by means of awasher 29 and nuts 30 and 31 or in anysuitable way, so that the bolt will serve as an axle upon which theplantguard can rotate as the cultivator is advanced.

A weight 33 is slidingly connected with the bearer 27 in such a mannerthat it can be moved backward and forward and clamped at any pointdesired as a means for regulating the depth of the free ends of thespokes 17 as they successively penetrate theground.

In the practical use of my invention thus connectedand applied only fineground is allowed to pass outward between the spokes to lodge aroundplants. To limit the amount of ground that is to pass toward the plantswhen they are small, the circular disk 1.9 is retained on the guard.When the plants are large, the disk can be removed to allow more loosesoil to pass outward and to fall around the plants.

Having thus described the construction and stated.

function of each part and their arrangement in combination, thepractical operation and utility of my invention will be readilyunderstood bypersons familiar with the art to which it pertains, and

What I claim as new, and desire to secure by Letters Patent, is-

1. A rotatable plant-guard consisting ofa hub, straight spokes fixed tothe hub to extend radially, a disk fixed to the inner end of the spokeand hub, and a rim fixed to the spokes at some distance from theirouterends, in-combination with a bearer adapted to be fixed to the beams of acultivator, to operate in the manner set forth, for the purposes 2. Arotatable plant-guard, composed of a hub having an integral flange atone end, a disk fixed to said flange, a second disk placed against theend of the hub, a plurality of straight spokes provided with eyes attheir inner ends, fixed between the two disks by means of rivets toextend radially and a band fixed to the outer end portions of thespokes, for the purposes stated.

3. A rotatable plant-guard, composed of a hub having an integral flangeat one end, and a disk fixed to the said flange, a second disk placedagainst the end of the hub, a plurality of straight spokes provided witheyes at their inner ends fixed between the two disks, by means ofrivets, to extend radially, and a band fixed to the-outer portion of thespokes, and

a disk detachably fastened to the spokes and rim, arranged and combinedto operate inthe manner set forth, for the purposes stated.

4. A rotatable plant-guard, consisting of a hub, straight spokesextending radially from the hub, a rim or band connecting the outer withthe lower end of said upright to extend horizontally and to have anupward motion but no downward motion, and a weight adj ustably connectedwith said bar, and a rotatable plant-guard attached to the front freeend of said bar, arranged andcombined to operate in the manner setforth, for the puri poses stated.

6. A plant-guard and ground 'pulverizer and distributer comprising arotatable guard having spokes extending radially, a fixed band or rimfixed to' the inner end portions of the rim, a disk detachably fastenedto the spokes and said .rim, an upright adapted to be fastened to aplow-beam, and its lower end doubled upward, a bar, elbows-shaped at itsrear end, pivoted between the double part of said upright and its frontend inclined laterally to support and carry the rotatable plantguard,and a weight adjustably connected with said bar, arranged and combinedto operate in the manner set forth, for the purposes stated.

MARTIN OHRISTIANSON.

Witnesses:

ASHER 0. NASBY, T. O. HANSON.

